.hl_nav{
    position: relative;
    color: #666;
    min-width: 1200px;
    height: 50px;
}
.hl_nav a{
    display: block;
    text-decoration: none;
}
.hl_nav .shade{
    position: absolute;
    width: 100%;
    height: 40px;
    top: 50px;
    left: 0;
    z-index: 1;
    background-color: #EEEEEE;
    opacity: 0.9;
    filter: alpha(opacity=90);
    box-shadow: 0 5px 15px #CCCCCC;
    display: none;
    border-bottom: #ffffff solid 1px;
    border-bottom: rgba(255,255,255,0.3) solid 1px;
}
.hl_nav .nav_list{
    position: absolute;
    top: 0;
    left: 50%;
    margin: 0 0 0 -600px;
    z-index: 2;
    padding: 0;
    list-style: none;
    width: 1200px;
    height: 50px;
}
.hl_nav .nav_list>li{
    padding: 0;
    float: left;
    margin: 0;
    width: 8%;
    text-align: center;
    height: 50px;
    overflow: hidden;
    transition: height 0.3s;
}
.hl_nav .nav_head{
    height: 50px;
    line-height: 50px;
    color: #333;
    font-size: 16px;
    position: relative;
}
.hl_nav .nav_body{
    display: block;
    height: 40px;
    line-height: 40px;
    color:#333;
    position: relative;
    border-left: #1eab3c solid 2px;
    border-right: #1eab3c solid 2px;
}
.hl_nav .nav_body:last-child{
    border-bottom: #1eab3c solid 2px;
}

.hl_nav .nav_list>li.active .nav_head,.hl_nav .nav_list>li:hover .nav_head {
    background-color: #1eab3c;
}
.hl_nav .nav_list>li:hover{
    background-color: #ffffff;
    height: auto;
}
.hl_nav .nav_body:hover{
    color: #1eab3c;
}
.hl_nav .nav_body:after{
    content: '';
    display: block;
    height: 0;
    position: absolute;
    bottom: -1px;
    width: 60%;
    left: 20%;
    border-bottom: #1eab3c dashed 1px;
}